Radio frequency system and electronic equipment

Abstract

The invention relates to a radio frequency system and electronic equipment, and the system comprises a radio frequency transceiver which is only provided with a first transmitting port and a second transmitting port; the transmitting module comprises a first transmitting circuit, a second transmitting circuit and a first switching circuit; wherein the input end of the first transmitting circuit is connected with the first transmitting port, and the input end of the second transmitting circuit is connected with the second transmitting port; the output end of the first transmitting circuit and the output end of the second transmitting circuit are connected to the first antenna and the second antenna in a switchable mode through the first switching circuit. Wherein the second transmitting circuit comprises a power amplification unit and is used for supporting power amplification processing on the radio frequency signal, when the radio frequency system works in a single connection mode, a target transmitting circuit is determined according to a power mode of the radio frequency system, and the target transmitting port is controlled to output the radio frequency signal to the target transmitting circuit, so that the radio frequency signal is transmitted to the target transmitting circuit through radiation of a target antenna. The power consumption of the radio frequency transmitting circuit can be optimized while the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to a radio frequency system and electronic device. Background Technology

[0002] With the rapid development of communication technology, mobile terminals have more and more communication standards and frequency bands, and there are also many transmission paths between the radio frequency chip and the antenna of the mobile terminal to support the transmission of signals in different frequency bands.

[0003] Generally, mobile terminals typically include a power amplifier (PA) in their transmission path. In this path, the radio frequency (RF) signal is amplified by the power amplifier before being transmitted by the antenna. The power amplifier is one of the main components generating unnecessary power consumption in the RF circuit, and optimizing the power consumption of the transmission path requires further research. Summary of the Invention

[0004] This application provides a radio frequency system and electronic device that can optimize power consumption of the transmission path while reducing costs.

[0005] In a first aspect, embodiments of this application provide a radio frequency (RF) system that supports single-connection mode and dual-connection mode, the RF system comprising:

[0006] A radio frequency transceiver is configured with at least one set of transmit ports; wherein each set of transmit ports includes a first transmit port and a second transmit port;

[0007] The transmitting module includes a first transmitting circuit, a second transmitting circuit, and a first switching circuit; wherein, the input terminal of the first transmitting circuit is connected to the first transmitting port, and the input terminal of the second transmitting circuit is connected to the second transmitting port; the output terminals of the first and second transmitting circuits can be switched to a first antenna and a second antenna via the first switching circuit; wherein,

[0008] The second transmitting circuit includes a power amplification unit for supporting power amplification processing of radio frequency signals. The output power of the second transmitting circuit is greater than the output power of the first transmitting circuit, and the link insertion loss of the second transmitting circuit is greater than the link insertion loss of the first transmitting circuit.

[0009] When the radio frequency system operates in the single-connection mode, the target transmitting circuit is determined according to the power mode of the radio frequency system, and the target transmitting port is controlled to output the radio frequency signal to the target transmitting circuit for radiation through the target antenna; wherein, the target transmitting port is the first transmitting port or the second transmitting port in the same group of transmitting ports, and the target antenna is determined according to the antenna efficiency of the first antenna and the second antenna.

[0010] Secondly, embodiments of this application provide an electronic device including the radio frequency system as described above.

[0011] The aforementioned radio frequency (RF) system and electronic device include an RF transceiver and a transmitting module. The RF transceiver may include at least one transmitting port group. The transmitting module includes a first transmitting circuit and a second transmitting circuit with different transmitting power and link insertion loss, as well as a first switching circuit for switching between the first antenna and the second antenna. The first transmitting circuit and the second transmitting circuit can be directly connected to the first transmitting port and the second transmitting port of the transmitting port group, respectively. This eliminates the need for the switching module or bypass switch located between the RF transceiver and the transmitting module for switching between the two transmitting circuits, as is the case in related technologies. This simplifies the control logic settings for the switching module or bypass switch, facilitates the miniaturization of the RF system, and reduces the losses caused by the switching module or bypass switch, thereby reducing the link loss of the RF system and improving its battery life. Furthermore, by setting up a first transmitting circuit and a second transmitting circuit with different power consumption and transmitting power, the RF system can select a suitable target transmitting circuit and target antenna based on the current communication scenario, making it applicable to different communication scenarios. It also reduces power consumption while improving communication performance. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is one of the schematic diagrams of the radio frequency system architecture in one embodiment;

[0014] Figure 2 This is a schematic diagram of the architecture of a transmit channel of an RF transceiver in one embodiment;

[0015] Figure 3 This is a second schematic diagram of the architecture of a radio frequency system in one embodiment;

[0016] Figure 4 This is the third schematic diagram of the radio frequency system architecture in one embodiment;

[0017] Figure 5 This is the fourth schematic diagram of the radio frequency system architecture in one embodiment;

[0018] Figure 6 This is the fifth schematic diagram of the radio frequency system architecture in one embodiment;

[0019] Figure 7 This is a schematic diagram of the radio frequency system architecture in one embodiment;

[0020] Figure 8 This is the seventh schematic diagram of the radio frequency system architecture in one embodiment;

[0021] Figure 9 This is the eighth schematic diagram of the architecture of a radio frequency system in one embodiment;

[0022] Figure 10 This is the ninth schematic diagram of the architecture of the radio frequency system in one embodiment;

[0023] Figure 11 This is a schematic diagram of the architecture of a radio frequency system in one embodiment;

[0024] Figure 12 This is a schematic diagram of the architecture of an electronic device in one embodiment. Detailed Implementation

[0025] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0027] It is understood that the terms "first" and "second" used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The terms "first," "second," etc., may be used herein to describe various elements, but these elements are not limited by these terms. These terms are used only to distinguish one element from another. Furthermore, in the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this application, "several" means at least one, such as one, two, etc., unless otherwise explicitly specified.

[0028] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0029] When used herein, the singular forms of “a,” “an,” and “ / the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0030] In one embodiment, this application provides a radio frequency system applicable to an electronic device. Exemplarily, the electronic device may specifically be user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a terminal agent, or a terminal apparatus, etc. The access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a mobile phone, a computer, a laptop computer, a handheld computing device (e.g., a tablet), and other devices used for communication over a wireless system.

[0031] like Figure 1As shown, this application embodiment provides a radio frequency (RF) system, which includes an RF transceiver 10 and a transmitting module 20. The RF transceiver 10 is configured with at least a first transmitting channel and a second transmitting channel; the first transmitting channel includes multiple first transmitting ports for transmitting signals of different frequency bands, and the second transmitting channel includes multiple second transmitting ports for transmitting signals of different frequency bands. For example, each RF transmitting channel in each RF transceiver 10 can transmit RF signals of different frequency bands; for instance, the first transmitting channel and the second transmitting channel can respectively be configured with an LB transmitting port, an MB transmitting port, an HB transmitting port, and a UHB transmitting port. Optionally, as... Figure 2 As shown, each transmitting channel may further include an intrinsic signal source 101, a filter 102, a quadrature up-converter 103, a digital-to-analog converter DA 104, etc. Optionally, the RF transceiver 10 may also include multiple receiving channels for receiving signals, and each receiving channel may be provided with multiple receiving ports, such as LB receiving port, MB receiving port, HB receiving port, and UHB receiving port. It should be noted that, in the embodiments of this application, the internal structure of the RF transceiver 10 is not limited to the examples described above, and may also include other electronic devices. The RF transceiver 10 provided in the embodiments of this application, by providing multiple transmitting ports and multiple receiving ports, can meet the transmission and reception processing of RF signals in multiple different frequency bands, realizing flexible and diversified design requirements.

[0032] In this embodiment, a first transmit port TX0 and a second transmit port TX1 of the radio frequency transceiver 10 may constitute a transmit port group. Exemplarily, the first transmit port TX0 and the second transmit port TX1 in the same transmit port group transmit radio frequency signals in the same frequency band. Optionally, the first transmit port TX0 and the second transmit port TX1 in the same transmit port group transmit radio frequency signals in different frequency bands.

[0033] The transmitting module 20 includes a first transmitting circuit 210, a second transmitting circuit 220, and a first switching circuit 230. The input terminal of the first transmitting circuit 210 is connected to the first transmitting port TX0, and the input terminal of the second transmitting circuit 220 is connected to the second transmitting port TX1. The output terminals of the first transmitting circuit 210 and the second transmitting circuit 220 can be switched to the first antenna ant0 and the second antenna ant1 via the first switching circuit 230. It can be understood that the two first terminals of the first switching circuit 230 can be connected to the first transmitting circuit 210 and the second transmitting circuit 220 respectively, and the two second terminals of the first switching circuit 230 can be connected to the first antenna ant0 and the second antenna ant1 respectively. By controlling the switching state of the first switching circuit 230, the path between the first transmitting circuit 210 and the first antenna ant0 or the second antenna ant1 can be opened, and the path between the second transmitting circuit 220 and the first antenna ant0 or the second antenna ant1 can also be opened.

[0034] In this embodiment, the first transmitting circuit 210 does not include a power amplification unit, while the second transmitting circuit 220 includes a power amplification unit 221. The output power of the second transmitting circuit 220 is greater than that of the first transmitting circuit 210, and the link insertion loss of the second transmitting circuit 220 is greater than that of the first transmitting circuit 210. The power amplification unit 221 may include a power amplifier, which can amplify the power of the radio frequency signal under the power supply signal provided by the power supply module. For example, the power amplifier can operate in envelope tracking (ET) mode and average power tracking (APT) mode. The power supply signal is different for each operating mode of the power amplifier, and the output power of the power amplifier is different for each mode. The link insertion loss can be understood as the loss of the radio frequency signal during the transmission of the radio frequency signal by the transmitting circuit. It is understood that the first transmitting circuit 210 is a low-gain (or low-power) circuit or a low-power circuit, and the second transmitting circuit 220 is a high-gain (or high-power) circuit or a high-power circuit.

[0035] In this embodiment, the radio frequency system supports single-connectivity mode and dual-connectivity mode. The single-connectivity mode can be a time-sharing mode where the first transmitting circuit 210 and the second transmitting circuit 220 operate. For example, the single-connectivity mode can include 4G LTE single-connectivity mode or 5G NR SA single-connectivity mode. The dual-connectivity mode can be a mode where the first transmitting circuit 210 and the second transmitting circuit 220 operate simultaneously to support the transmission of two radio frequency signals. For example, the dual-connectivity mode can include Non-Standalone (NSA) mode, Dual SIM Dual Active (DSDA) mode, and Uplink Carrier Aggregation (UL CA) mode, etc.

[0036] When the radio frequency (RF) system operates in single-connection mode, the target transmitting circuit is determined based on the RF system's power mode, and the target transmitting port is controlled to output RF signals to the target transmitting circuit for radiation via the target antenna. The target transmitting port is either the first transmitting port TX0 or the second transmitting port TX1 in the same group of transmitting ports. In single-connection mode, the RF signals transmitted by the first transmitting port TX0 and the second transmitting port TX1 in the same group share the same frequency band. The power mode can be determined based on the RF system's communication scenario, which may include at least one of the RF system's network environment scenario and operating state scenario. The network environment scenario can be determined based on the RF system's network characteristics. Network characteristics may include one or any combination of the following network parameters: network standard (e.g., GSM, WCDMA, CDMA, LTE, NR, etc.), cell information (e.g., Cell info, PCI, etc.), operating frequency band (e.g., B1 / B3 / N78 / N41, etc.), operating frequency point, signal strength (e.g., RSSI, RSRP), uplink and downlink call quality, data throughput, bit error rate, etc. The operating state scenario may include standby state, normal operating state, etc. For example, in scenarios where an electronic device is in standby mode or in a network environment with high signal strength, its RF system operates in low-power mode, resulting in a lower target output power. For instance, the target output power of its transmitting module 20 may be the same as the output power of the RF transceiver 10. In this case, the first transmitting circuit 210 can be identified as the target transmitting circuit, and the first transmitting port TX0 can also be identified as the target transmitting port. Conversely, when the RF system is operating normally in a network environment with weak signal strength (e.g., in a space far from the base station or a relatively enclosed space (e.g., an elevator, a basement), or the RF system's antenna is blocked), its RF system operates in high-power mode, resulting in a higher target output power. For instance, the target output power of its transmitting module 20 must be higher than the output power of the RF transceiver 10 to meet communication requirements. In this case, the second transmitting circuit 220 can be identified as the target transmitting circuit, and the second transmitting port TX1 can also be identified as the target transmitting port.

[0037] The target antenna can be determined based on the antenna efficiency of the first antenna ant 0 and the second antenna ant 1, wherein the target antenna can be the antenna with the higher antenna efficiency between the first antenna ant 0 and the second antenna ant 1. Antenna efficiency can be determined based on the reception quality of the first antenna ant 0 and the second antenna ant 1 receiving the same signal. For example, the antenna with higher reception quality can be used as the target antenna. Optionally, antenna efficiency can also be determined based on the obstruction status of the first antenna ant 0 and the second antenna ant 1. For example, if one antenna is obstructed and the other is not, the unobstructed antenna can be used as the target antenna. It should be noted that in this embodiment, the method of determining the target antenna is not limited to the examples described above, and other methods can also be used. In single-connection mode, the first switching circuit 230 can select the antenna with higher antenna efficiency as the target antenna, which can further improve the communication performance of the radio frequency system.

[0038] The radio frequency system provided in this application includes a radio frequency transceiver 10 and a transmitting module 20. The radio frequency transceiver 10 may include at least one transmitting port group. The transmitting module 20 includes a first transmitting circuit 210 and a second transmitting circuit 220 with different transmitting power and link insertion loss, as well as a first switching circuit 230 for switching the first antenna ant 0 and the second antenna ant 1. The first transmitting circuit 210 and the second transmitting circuit 220 can be directly connected to the first transmitting port TX0 and the second transmitting port TX1 of the transmitting port group, respectively. This eliminates the need for the switching module between the RF transceiver 10 and the transmitting module 20 used to switch between the two transmitting circuits, or the bypass switch connected to the power amplifier unit 221, which is required in related technologies. This reduces costs and simplifies the control logic settings for the switching module or bypass switch, which is beneficial for miniaturizing the RF system. It also reduces losses caused by the switching module or bypass switch, thereby reducing link losses in the RF system and improving its battery life. Furthermore, by setting the first transmitting circuit 210 and the second transmitting circuit 220 with different power consumption and transmitting power, the RF system can select the appropriate target transmitting circuit and target antenna based on the current communication scenario. This makes it suitable for different communication scenarios and reduces power consumption while improving communication performance.

[0039] In one exemplary embodiment, such as Figure 3 As shown, the first transmitting circuit 210 includes a filtering unit 211, which is connected to the first transmitting port TX0 and the first switching circuit 230, respectively, and is used to filter the received radio frequency signal. The filtering unit 211 may include a filter or a duplexer, which can filter out multiple harmonics (e.g., spurious waves) of the radio frequency signal.

[0040] The second transmitting circuit 220 may include a power amplification unit 221, which may include a power amplifier. Under the power supply signal provided by the power module, the power amplifier amplifies the radio frequency signal. Generally, the power consumption of the power amplifier itself is higher than that of the filter unit 211. Furthermore, the power module also consumes power during the operation of the power amplifier. During the same operating period, both the filter unit 211 and the power amplification unit 221 are in operation, but the power consumption of the power amplification unit 221 is higher than that of the filter unit 211.

[0041] In this embodiment, in low-power mode, the RF transceiver 10 can control the first transmit port TX0 to output an RF signal. After filtering by the filter unit 211 of the first transmit circuit 210, the signal is switched to the target antenna via the first switch circuit 230 to achieve RF signal transmission. Correspondingly, in high-power mode, the RF transceiver 10 can control the second transmit port TX1 to output an RF signal. After power amplification by the power amplifier unit 221 of the second transmit circuit 220, the signal is switched to the target antenna via the first switch circuit 230. That is, in low-power mode, the power of the RF signal output by the RF transceiver 10 can meet its transmission power requirements. The transmission path is not connected to the power amplifier unit 221. The RF signal is filtered by the filter circuit to filter spurious waves. This reduces power consumption on the transmission path and improves the spurious wave filtering function, thereby improving the RF signal transmission performance.

[0042] In one exemplary embodiment, unlike the foregoing embodiments, the filter unit 211 in the first transmitting circuit 210 can be replaced with radio frequency traces. For example... Figure 4 As shown, the first transmitting circuit 210 includes a radio frequency (RF) trace 212, which is connected to the first transmitting port TX0 and the first switching circuit 230 respectively, and is used to transmit RF signals.

[0043] When the first transmitting circuit 210 is an RF trace 212, it can be understood as a straight-through circuit, including only the RF trace 212 and excluding RF devices such as power amplifiers and filters. The first transmitting circuit 210 does not perform power amplification or filtering on the received RF signal; it directly transmits the RF signal from the first transmitting port TX0 to the first switching circuit 230 and then to free space via the target antenna. The corresponding transmission path for the first transmitting circuit 210 is: RF transceiver 10 → RF trace 212 → first switching circuit 230 → target antenna.

[0044] In low-power mode, the RF transceiver 10 can control the first transmit port TX0 to output an RF signal, which is then transmitted via the RF trace 212 of the first transmit circuit 210. The signal is then switched to the target antenna via the first switching circuit 230 to achieve transmission of the RF signal. By setting the first transmit circuit 210 as the RF trace 212, front-end RF devices (e.g., power amplifiers and filters) in the transmission path can be eliminated, further reducing the link insertion loss and overall loss of the transmission path, thus improving the battery life of the RF system.

[0045] In one exemplary embodiment, such as Figure 5 As shown, the transmitting module 20 includes a first transmitting circuit 210, a second transmitting circuit 220, a first switching circuit 230, and a second switching circuit 240. The connection relationships of the first transmitting circuit 210, the second transmitting circuit 220, and the first switching circuit 230 can be referred to the previous embodiment and will not be repeated here. A first terminal of the second switching circuit 240 is connected to the first transmitting port TX0, another first terminal of the second switching circuit 240 is connected to the output terminal of the power amplifier unit 221, a second terminal of the second switching circuit 240 is connected to the first switching circuit 230, and another second terminal of the second switching circuit 240 is connected to the filter unit 211. The second switching circuit 240 can be used to select and connect the power amplifier unit 221 in the first transmitting circuit 210 with the filter unit 211 and the first switching circuit 230, respectively, and can also be used to select and connect the first transmitting port TX0 with the filter unit 211 and the first switching circuit 230, respectively. In this embodiment, the second switching circuit 240 can be used to switch different paths to suit different communication scenarios, such as those with different power and power consumption requirements. For ease of explanation, an example is given where the RF system supports different power modes. The RF system can support a first power mode and a second power mode, where the output power of the first power mode is greater than that of the second power mode. It can be understood that the first power mode is a high-power mode, and the second power mode is a low-power mode.

[0046] In the first power mode, the second switching circuit 240 can be used to connect the first path between the power amplifier unit 221 and the filter unit 211. Optionally, in the first power mode, the second switching circuit 240 can also connect the second path between the power amplifier unit 221 and the first switching circuit 230. It can be understood that in the first power mode, the corresponding transmission path is a high-power (or high-gain) transmission path, which specifically may include a first sub-transmission path and a second sub-transmission path. Specifically, the first sub-transmission path is RF transceiver 10 → power amplifier unit 221 → second switching circuit 240 → filter unit 211 → first switching circuit 230 → antenna; the second sub-transmission path is RF transceiver 10 → power amplifier unit 221 → second switching circuit 240 → first switching circuit 230 → antenna. When the RF system operates in high-power mode, its second switching circuit 240 can connect the first path to transmit RF signals using the first sub-transmission path, or the second switching circuit 240 can connect the first path to transmit RF signals using the second sub-transmission path.

[0047] In the second power mode, the second switching circuit 240 can be used to connect the third path between the first transmit port TX0 and the filter unit 211. Optionally, in the second power mode, the second switching circuit 240 can connect the fourth path between the first transmit port TX0 and the first switching circuit 230. It can be understood that in the second power mode, the corresponding transmit path is a low-power (or low-gain) transmit path, which may specifically include a third sub-transmit path and a fourth sub-transmit path. Specifically, the third sub-transmit path is RF transceiver 10 → second switching circuit 240 → filter unit 211 → first switching circuit 230 → antenna; the fourth sub-transmit path is RF transceiver 10 → second switching circuit 240 → first switching circuit 230 → antenna. When the RF system operates in low-power mode, its second switching circuit 240 can connect the third path to transmit RF signals using the third sub-transmit path, or the second switching circuit 240 can connect the fourth path to transmit RF signals using the fourth sub-transmit path.

[0048] In this embodiment, by providing a second switching circuit 240, both the high-power transmission path and the low-power transmission path can reuse the filtering unit 211. The filtering unit 211 can filter out spurious waves in the radio frequency signal, improving the communication performance of the radio frequency system. Thus, by using the filtering unit 211 for both the high-power and low-power transmission paths, cost reduction can be achieved while simultaneously improving the communication performance of the radio frequency system. Furthermore, by providing the second switching circuit 240, the number of transmission paths for both the high-power and low-power transmission paths can be expanded (e.g., each can be expanded to two paths). This allows the radio frequency system to select a suitable transmission path based on the current communication scenario, thus balancing the system's transmission power, power consumption, and communication performance.

[0049] Optionally, the RF transceiver 10 can also be connected to the first switching circuit 230 and the second switching circuit 240 respectively to control the switching states of the first switching circuit 230 and the second switching circuit 240. In this way, the RF transceiver 10 can directly control the conduction states of the first switching circuit 230 and the second switching circuit 240 based on the current communication scenario, and control the target transmitting port to provide RF signals, which can improve the responsiveness and timeliness of the RF system, thereby improving the communication performance of the RF system. Furthermore, the RF system can control the first switching circuit 230 and the second switching circuit 240 without the need for an additional controller, which can further reduce the cost of the RF system and is also beneficial for the miniaturization design of the RF system.

[0050] In an exemplary embodiment, the output power and link insertion loss of the third sub-transmit path corresponding to the third path, and the output power and link insertion loss of the fourth sub-transmit path corresponding to the fourth path, can be pre-stored in the RF transceiver 10. Generally, the fewer RF devices on a transmission path, the lower the corresponding loss. Therefore, the link insertion loss of the fourth sub-transmit path is lower than that of the third sub-transmit path. In this embodiment, the RF transceiver 10 is configured to control the second switching circuit 240 to turn on the fourth path when the transmission power of the fourth path is greater than or equal to a preset threshold. The preset threshold can be determined based on the minimum output power of the RF signal. For ease of explanation, the minimum output power of the RF signal is used as an example of this preset threshold. If the output power of the transmission path is lower than the preset threshold, the transmission path cannot meet the uplink communication requirements of the RF signal.

[0051] For example, when the transmit power of the fourth path is greater than or equal to a preset threshold and the output power of the third path is less than a preset threshold, the second switching circuit 240 is controlled to turn on the fourth path. In a low-power transmit path, if the output power of the third sub-transmit path corresponding to the third path is lower than a preset threshold, and the output power of the fourth sub-transmit path corresponding to the fourth path is higher than or equal to a preset threshold, the second switching circuit 240 can be controlled to turn on the fourth path to transmit the radio frequency signal using the fourth sub-transmit path, thereby achieving low-power, low-consumption communication and thus providing the battery life of the radio frequency system.

[0052] Optionally, the RF transceiver 10 is configured to control the second switching circuit 240 to turn on the fourth channel when the transmit power of both the third channel and the fourth channel is greater than or equal to a preset threshold. The RF devices on the third sub-transmit path corresponding to the third channel have an additional filter unit 211 compared to the RF devices on the fourth sub-transmit path corresponding to the fourth channel; obviously, the power consumption of the third sub-transmit path is higher than that of the fourth sub-transmit path. In the second power mode, when the output power of both the third and fourth sub-transmit paths is greater than the preset threshold, the RF transceiver 10 can control the second switching circuit 240 to turn on the fourth channel, thereby enabling low-power, low-consumption transmission of RF signals using the fourth sub-transmit path, and further improving the battery life of the RF system.

[0053] In an exemplary embodiment, the RF transceiver 10 is configured to: determine whether harmonic interference exists in the transmission path corresponding to the fourth path when the transmission power of both the third and fourth paths is greater than or equal to a preset threshold; and control the second switching circuit 240 to turn on the third path when harmonic interference exists. Specifically, if a first-order, second-order, third-order, or higher-order harmonic of the RF signal exists in the fourth sub-transmission path corresponding to the fourth path, harmonic interference can be considered to exist in the fourth sub-transmission path. When harmonic signals interfering with the RF signal exist in the fourth sub-transmission path, the RF transceiver 10 can control the second switching circuit 240 to turn on the third path, so as to filter out the harmonic interference signal using the third path with a filtering unit 211, that is, to transmit the RF signal to the target antenna through the third sub-transmission path. In the second power mode, when the output power of the third and fourth sub-transmit paths are both greater than the preset threshold and there is harmonic interference on the fourth path, the RF transceiver 10 can control the second switching circuit 240 to turn on the third path, so as to use the third sub-transmit path to filter the RF signal to filter the harmonic interference signal, thereby achieving low power and low power consumption transmission, and further providing the RF system with endurance.

[0054] In one exemplary embodiment, such as Figure 6As shown, the filtering unit 211 includes multiple filters 2111. The first terminal of each filter 2111 is connected to the second terminal of the second switching circuit 240, and the second terminal of each filter 2111 is connected to the first switching circuit 230. Each filter 2111 has a different passband. For example, the radio frequency signal is a high-frequency signal. The passbands of the multiple filters 21111 included in the filtering unit 211 are sub-bands of different high-frequency bands. For example, the filtering unit 211 may include a first filter, a second filter, and a third filter. The signals output by the first filter, the second filter, and the third filter may be signals in the B40, B41, and B7 frequency bands, respectively. The second switching circuit 240 can selectively connect any filter to the first transmit port TX0 and the power amplifier unit 221. The first switching circuit 230 can selectively connect any filter to the first antenna ant0 and the second antenna ant1.

[0055] In this embodiment, the filtering unit 211 may include multiple filters with different passbands, which can support filtering of multiple radio frequency signals to support the transmission of multiple radio frequency signals, expand the communication bandwidth of the radio frequency system, and thus improve the communication performance of the radio frequency system.

[0056] In an exemplary embodiment, when the radio frequency system operates in dual-connection mode, the first transmit port TX0 and the second transmit port TX1 in the same group simultaneously output radio frequency signals for transmission through the first transmit circuit 210 and the second transmit circuit 220. This increases the throughput of the radio frequency system transmitting the radio frequency signal, thereby improving the uplink transmission performance of the radio frequency signal.

[0057] In an exemplary embodiment, the radio frequency signals output from the first transmit port TX0 and the second transmit port TX1 in the same group have the same frequency band. The frequency band of the radio frequency signal may include one of the following: low frequency band, mid frequency band, high frequency band, and ultra-high frequency band. In this case, the first switching circuit 230 can selectively open the path between one of the first antenna ant0 and the second antenna ant1 and the first transmit circuit 210, while simultaneously opening the path between the other of the first antenna ant0 and the second antenna ant1 and the second transmit circuit 220, thereby configuring an antenna for each transmit circuit and supporting dual-path transmission of the radio frequency signal. This improves the throughput of the radio frequency system transmitting the radio frequency signal, thereby enhancing the uplink transmission performance of the radio frequency signal.

[0058] Optionally, the frequency bands of the radio frequency signals output by the first transmitting port TX0 and the second transmitting port TX1 in the same group are different. One of the first transmitting port and the second transmitting port is used to output a first radio frequency signal, and the other of the first transmitting port and the second transmitting port is used to output a second radio frequency signal. For example, the radio frequency signal output by the first transmitting port TX0 can be the first radio frequency signal, and the radio frequency signal output by the second transmitting port TX1 can be the second radio frequency signal, or the radio frequency signal output by the first transmitting port TX0 can be the second radio frequency signal, and the radio frequency signal output by the second transmitting port TX1 can be the first radio frequency signal. The first radio frequency signal and the second radio frequency signal have different frequency bands. Optionally, the communication standards of the first radio frequency signal and the second radio frequency signal can be the same or different. The communication standards include, but are not limited to, 4G LTE and 5G NR. The frequency bands include, but are not limited to, low frequency, medium frequency, high frequency, and ultra-high frequency. The radio frequency system in this embodiment can support the simultaneous transmission of the first radio frequency signal and the second radio frequency signal to support dual connectivity modes, such as NSA mode, DSDA mode, and UL CA mode, etc., which can expand the working modes of the radio frequency system to suit diverse application scenarios and improve the uplink communication performance of the radio frequency system.

[0059] Specifically, when the reception quality of the first radio frequency (RF) signal is higher than that of the second RF signal, the first transmitting port is controlled to output the first RF signal for transmission through the first transmitting circuit, and the second transmitting port is controlled to output the second RF signal for transmission through the second transmitting circuit. The reception quality can be determined based on the received signal strength of the RF signal received by the RF system, such as RSSI and RSRP. For example, if the RSSI of the first RF signal is higher than the RSRP of the second RF signal, it indicates that the reception quality of the first RF signal is higher than that of the second RF signal. In this case, the first transmitting circuit can be controlled to transmit the first RF signal, and the second transmitting circuit can be controlled to support power amplification of the second RF signal. This ensures that the transmission power of both the first and second RF signals meets their communication requirements, making it suitable for dual-connection modes such as NSA, DSDA, and UL CA.

[0060] Optionally, if the reception quality of the first radio frequency signal is lower than that of the second radio frequency signal, the first transmitting port is controlled to output the second radio frequency signal for transmission through the first transmitting circuit, and the second transmitting port is controlled to output the first radio frequency signal for transmission through the second transmitting circuit. In this case, the first transmitting circuit can be controlled to process the transmission of the second radio frequency signal, and the second transmitting circuit can be controlled to support power amplification of the first radio frequency signal, thereby ensuring that the transmission power of both the first and second radio frequency signals meets their communication requirements. This is applicable to dual-connection modes such as NSA mode, DSDA mode, and UL CA mode.

[0061] Optionally, in dual-connection mode, since the frequency bands of the radio frequency signals output by the first transmit port TX0 and the second transmit port TX1 in the same group are different, the target antennas of the first and second transmit circuits can be determined based on the antenna efficiency of the first and second antennas. For example, an antenna with high antenna efficiency can be determined as the target antenna of the first transmit circuit, and an antenna with low antenna efficiency can be determined as the target antenna of the second transmit circuit.

[0062] In one exemplary embodiment, such as Figure 7 As shown, the transmitting module 20 is an RF PA Mid device, which is configured with a first input port SRS_IN, a second input port HB_IN, a first antenna port ANT1, and a second antenna port ANT2. The first transmitting circuit 210, the second transmitting circuit 220, and the first switching circuit 230 are all integrated into this RF PA Mid device. The first transmitting port TX0 is connected to the first transmitting circuit 210 via the first input port SRS_IN; the second transmitting port TX1 is connected to the second transmitting circuit 220 via the second input port HB_IN; the first antenna port ANT1 is connected to both the first switching circuit 230 and the first antenna ant0; and the second antenna port ANT2 is connected to both the first switching circuit 230 and the second antenna ant1.

[0063] When the RF system is in single-connection mode, the target transmitting circuit of the RF PA Mid device can be determined based on the power mode of the RF signal. The power mode can include low-power mode and high-power mode. In low-power mode, the RF transceiver 10 can identify the first transmitting circuit 210 as the target transmitting circuit, outputting an RF signal through the first transmitting port TX0 and transmitting it to the first transmitting circuit 210 via the first input port SRS_IN. The first transmitting circuit 210 then transmits the signal to the target antenna via the first switching circuit 230. In high-power mode, the RF transceiver 10 can identify the second transmitting circuit 220 as the target transmitting circuit, outputting an RF signal through the second transmitting port TX1 and transmitting it to the second transmitting circuit 220 via the second input port HB_IN. The power amplification unit 221 of the second transmitting circuit 220 amplifies the RF signal before transmitting it to the target antenna via the first switching circuit 230.

[0064] In this embodiment, the first transmitting circuit 210, the second transmitting circuit 220, and the first switching circuit 230 are all integrated into the same radio frequency device, such as a radio frequency PA Mid device. This improves the integration of the transmitting module 20 and eliminates the need for the switching module or bypass switch connected to the power amplifier unit 221 located between the radio frequency transceiver 10 and the transmitting module 20, which are used to switch between the two transmitting circuits. This reduces costs and simplifies the control logic settings for the switching module or bypass switch, which is beneficial for miniaturizing the radio frequency system. It also reduces losses caused by the switching module or bypass switch, thereby reducing link losses and improving the battery life of the radio frequency system. Furthermore, by setting the first transmitting circuit 210 and the second transmitting circuit 220 with different power consumption and transmission power, the radio frequency system can select the target transmitting circuit and target antenna that are suitable for the current communication scenario, making it applicable to different communication scenarios. It also reduces power consumption while improving communication performance.

[0065] In one exemplary embodiment, such as Figure 8As shown, in the aforementioned embodiments, the filter unit 211 and the second switching circuit 240 can also be integrated into the transmitting module 20 (i.e., the RF PA Mid device). The RF PA Mid device is further configured with an RF output port HB_TX_out and a transceiver port TRx1. The RF output port HB_TX_out and the transceiver port TRx1 are electrically connected externally to the RF PA Mid device via wiring. A first terminal of the second switching circuit 240 is connected to the first transmitting port TX0 via the first input port SRS_IN, and another first terminal of the second switching circuit 240 is connected to the output terminal of the power amplifier unit 221. A second terminal of the second switching circuit 240 is connected to the first switching circuit 230 via the RF output port HB_TX_out and the transceiver port TRx1, and the other second terminal of the second switching circuit 240 is connected to the first switching circuit 230 via the filter unit 211.

[0066] The first switching circuit 230 and the second switching circuit 240 may each include a multi-channel switching switch, which includes at least two first terminals and two second terminals. For example, the first terminal of the multi-channel switching switch is the first terminal of the second switching circuit 240, and the second terminal of the multi-channel switching switch is the second terminal of the second switching circuit 240. For ease of explanation, the multi-channel switching switches included in the first switching circuit 230 and the second switching circuit 240 are described as double-pole multi-throw switches. For example, the first switching circuit 230 may include a first double-pole multi-throw switch, and the second switching circuit 240 may include a second double-pole multi-throw switch.

[0067] Based on such Figure 8 The RF system shown can construct multiple transmission paths by switching the second switching circuit 240 through different conduction states. For example, a first sub-transmission path, a second sub-transmission path, and a third sub-transmission path can be constructed. The following section, in conjunction with the power modes of the RF system, explains the corresponding transmission paths of the RF system.

[0068] The radio frequency system operates in high-power mode of single-connection mode (taking the first sub-transmit path as an example):

[0069] The RF transceiver 10 outputs an RF signal from the second transmit port TX1 to the second input port HB_IN. The signal is then transmitted from the second input port HB_IN to the power amplification unit 221 (e.g., a power amplifier) ​​for power amplification. The amplified RF signal is switched to the filtering unit 211 by the second double-pole multi-throw switch for filtering. The filtered RF signal is then transmitted to the first double-pole multi-throw switch, which switches it to the corresponding target antenna port for transmission into free space via the target antenna. The target antenna port is one of the first antenna port ANT0 and the second antenna port ANT2.

[0070] The radio frequency system operates in low-power mode under single-connection mode (using the third sub-transmit path as an example):

[0071] The radio frequency transceiver 10 outputs a radio frequency signal to the first input port SRS_IN via the first transmit port TX0. The signal is then transmitted from the first input port SRS_IN to the second double-pole multi-throw switch. The second double-pole multi-throw switch switches to the filter unit 211 for filtering. The filtered radio frequency signal is then transmitted to the first double-pole multi-throw switch, which switches to the corresponding target antenna port for transmission to free space via the target antenna.

[0072] The radio frequency system operates in low-power mode of single-connection mode (taking the fourth sub-transmit path as an example):

[0073] The radio frequency transceiver 10 outputs a radio frequency signal from the first transmit port TX0 to the first input port SRS_IN. The signal is then transmitted from the first input port SRS_IN to the second double-pole multi-throw switch. The second double-pole multi-throw switch switches to the radio frequency output port HB_Tx_out1, and then transmits the signal through a trace to the transceiver port TRx1. The radio frequency signal received by the transceiver port TRx1 is switched by the first double-pole multi-throw switch to the corresponding target antenna port, so as to be transmitted to free space through the target antenna.

[0074] It should be noted that the determination and switching control of different sub-transmission paths can be referred to the aforementioned embodiments, and will not be repeated here.

[0075] Table 1 shows a comparison of losses for different sub-emission paths.

[0076]

[0077] As can be seen from Table 1, in terms of loss, the loss of the fourth sub-emission path is lower than that of the third sub-emission path, which can reduce the loss while saving the cost of the filter.

[0078] In this embodiment, the radio frequency system integrates the transmitting module 20, which specifically includes a first transmitting circuit 210, a second transmitting circuit 220, a first switching circuit 230, a second switching circuit 240, and a filtering unit 211, all of which are integrated into the transmitting module 20 (e.g., a radio frequency PA Mid device). By setting the connection relationship between each circuit in the PA Mid device and the radio frequency transceiver 10, the first antenna ant 0, and the second antenna ant 1, a first sub-transmitting path and a second sub-transmitting path for high-power mode, as well as a third sub-transmitting path and a fourth sub-transmitting path suitable for low-power mode, can be constructed. The third sub-transmitting path and the fourth sub-transmitting path do not have power amplifiers and can directly receive the radio frequency signals from the radio frequency transceiver 10 in order to achieve the purpose of power reduction in low-power mode.

[0079] In an exemplary embodiment, the RF transceiver 10 is further configured with a first control port and a second control port, wherein the first control port is connected to the first switching circuit 230 and the second control port is connected to the second switching circuit 240. The RF transceiver 10 can control the switching states of the first switching circuit 230 and the second switching circuit 240 through the first control port and the second control port, respectively. The first control port and the second control port can be either a MIPI port or a GPIO port. Different types of control ports have different communication protocols with the corresponding switching circuit 230. Generally, GPIO ports are less expensive than MIPI ports, and MIPI ports have a faster response speed than GPIO ports. In this embodiment, to improve the control efficiency of the first switching circuit 230 and the second switching circuit 240, the first control port and the second control port can each be a MIPI port.

[0080] like Figure 9 In one exemplary embodiment, unlike the RF PA Mid device in the previous embodiments, the first transmitting circuit 210 is externally located within the RF PA Mid device, and the first transmitting circuit 210 can be an RF trace 212. Specifically, the first end of the RF trace 212 is connected to the first transmitting port TX0, and the second end of the RF trace 212 is connected to the transceiver port TRx1 of the RF PA Mid device. That is, the first transmitting port TX0 and the transceiver port are connected through the RF trace 212.

[0081] Please continue to refer to this. Figure 9 Based on the RF transceiver 10, the RF PA Mid device, and the first transmitting circuit 210, a first transmitting path and a second transmitting path can be constructed. The following describes the corresponding transmitting path of the RF system in conjunction with the power mode of the RF system.

[0082] The radio frequency system operates in high-power mode of single-connection mode (taking the second transmit path as an example):

[0083] The RF transceiver 10 outputs an RF signal from the second transmit port TX1 to the second input port HB_IN. The signal is then transmitted from the second input port HB_IN to the power amplification unit 221 (e.g., a power amplifier) ​​for power amplification. The amplified RF signal is switched to the filtering unit 211 by the second double-pole multi-throw switch for filtering. The filtered RF signal is then transmitted to the first double-pole multi-throw switch, which switches it to the corresponding target antenna port for transmission into free space via the target antenna. The target antenna port is one of the first antenna port ANT0 and the second antenna port ANT2.

[0084] The radio frequency system operates in low-power mode of single-connection mode (taking the first transmit path as an example):

[0085] The radio frequency transceiver 10 transmits radio frequency signals to the transceiver port TRx1 via the first transmit port TX0 and radio frequency trace 212. The radio frequency signals received by the transceiver port TRx1 are switched to the corresponding target antenna port by the first double-pole multi-throw switch so as to be transmitted to free space through the target antenna.

[0086] Table 2 shows a comparison of losses for different transmission paths.

[0087]

[0088] As shown in Table 2, the second transmission path exhibits lower losses than related technologies. Compared to related technologies, it saves on the cost of filters and switching devices, and further reduces losses along the transmission path. Furthermore, compared to the third and fourth sub-transmission paths in the aforementioned embodiments, the second transmission path in this embodiment has even lower losses, which helps reduce the power consumption of the RF system and improves its battery life.

[0089] In one exemplary embodiment, such as Figure 10 and Figure 11 As shown, the RF PA Mid device also includes a third transmitting circuit, wherein the input terminal of the third transmitting circuit is connected to the RF transceiver 10, and the output terminal of the third transmitting circuit is connected to the first switching circuit 230. The third transmitting circuit may include a third power amplifier 251 to support power amplification processing of the received RF signal. Specifically, the frequency band of the RF signal supported by the third transmitting circuit is different from the frequency bands supported by the first transmitting circuit 210 and the second transmitting circuit 220. For example, the third transmitting circuit may support the transmission processing of intermediate frequency (IF) RF signals, wherein the IF signals may include frequency bands such as B1, B3, B25, B34, and B39. Optionally, the third transmitting circuit may include a third power amplifier 251, a third switch 252, and a third filtering unit, wherein the third filtering unit may include multiple filters to filter out spurious waves, corresponding to the output of frequency bands such as B1, B3, B25, B34, and B39.

[0090] Optionally, the PA Mid device also includes a receiving circuit 260 to support the reception and processing of multiple radio frequency signals. Exemplarily, the receiving circuit 260 may include a switching switch 261, multiple low-noise amplifiers 262, and a receiving filter to support the reception and processing of radio frequency signals in various frequency bands. For example, its receiving circuit may support the reception and processing of signals in frequency bands such as B39, B1, B4, B66, B3, B34, B25, B7, B41, B40, B32, B75, and B76.

[0091] It should be noted that the receiving filter and the transmitting filter in each transmitting circuit used to support the same frequency band in the embodiments of this application can be replaced by a combiner.

[0092] Optionally, the PA Mid device also includes a coupling circuit 270 disposed between the first switching circuit 230 and the antenna port, which can be used to detect the forward output power and directional output power of the radio frequency signal.

[0093] like Figure 12 As shown, further explanation will be given using a mobile phone as an example for electronic device 11. Specifically, as follows... Figure 12 As shown, the mobile phone may include a memory 21 (which optionally includes one or more computer-readable storage media), a processing module 22, a peripheral device interface 23, and an input / output (I / O) subsystem 26. These components optionally communicate via one or more communication buses or signal lines 29. Those skilled in the art will understand that... Figure 12 The mobile phone shown does not constitute a limitation on the mobile phone and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Figure 12 The various components shown are implemented in hardware, software, or a combination of both, including one or more signal processing and / or application-specific integrated circuits.

[0094] Memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplary examples include software components stored in memory 21 such as an operating system 211, a communication module (or instruction set) 212, a global positioning system (GPS) module (or instruction set) 213, etc.

[0095] The processing module 22 and other control circuits (such as processing circuits in electronic devices) can be used to control the operation of the mobile phone. The processing module 22 may include one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application-specific integrated circuits, etc.

[0096] The processing module 22 can be configured to implement a control algorithm for controlling the use of the antenna in the mobile phone. The processing module 22 can also issue control commands for controlling various switches in the electronic device 11.

[0097] I / O subsystem 26 couples input / output peripherals on the mobile phone, such as the keypad and other input control devices, to peripheral interface 23. I / O subsystem 26 optionally includes a touchscreen, buttons, a tone generator, an accelerometer (motion sensor), an ambient light sensor and other sensors, light-emitting diodes and other status indicators, data terminals, etc. For example, a user can control the operation of the mobile phone by supplying commands via I / O subsystem 26, and can use the output resources of I / O subsystem 26 to receive status information and other outputs from the mobile phone. For example, a user can press button 261 to turn the mobile phone on or off.

[0098] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A radio frequency system, characterized in that, The radio frequency system supports single-connection mode and dual-connection mode, and the radio frequency system includes: A radio frequency transceiver is configured with at least one set of transmit ports; wherein each set of transmit ports includes a first transmit port and a second transmit port; The transmitting module includes a first transmitting circuit, a second transmitting circuit, and a first switching circuit; wherein, the input terminal of the first transmitting circuit is connected to the first transmitting port, and the input terminal of the second transmitting circuit is connected to the second transmitting port; the output terminals of the first and second transmitting circuits can be switched to a first antenna and a second antenna via the first switching circuit; wherein, The second transmitting circuit includes a power amplification unit for supporting power amplification processing of radio frequency signals. The output power of the second transmitting circuit is greater than the output power of the first transmitting circuit, and the link insertion loss of the second transmitting circuit is greater than the link insertion loss of the first transmitting circuit. When the radio frequency system operates in the single-connection mode, the target transmitting circuit is determined according to the power mode of the radio frequency system, and the target transmitting port is controlled to output the radio frequency signal to the target transmitting circuit for radiation through the target antenna; wherein, the target transmitting port is the first transmitting port or the second transmitting port in the same group of transmitting ports, and the target antenna is determined according to the antenna efficiency of the first antenna and the second antenna.

2. The radio frequency system according to claim 1, characterized in that, The first transmitting circuit includes: The filtering unit is connected to the first transmitting port and the first switching circuit respectively, and is used to filter the received radio frequency signal.

3. The radio frequency system according to claim 2, characterized in that, The power modes include a first power mode and a second power mode; wherein the output power corresponding to the first power mode is higher than the output power corresponding to the second power mode; the transmitting module further includes: A second switching circuit has a first terminal connected to the first transmitting port, another first terminal connected to the output terminal of the power amplifier unit, a second terminal connected to the first switching circuit, and another second terminal connected to the filter unit. The second switching circuit is used to, in the first power mode, turn on the first path between the power amplifier unit and the filter unit, or turn on the second path between the power amplifier unit and the first switching circuit; The second switching circuit is used to, in the second power mode, to connect the third path between the first transmitting port and the filter unit, or to connect the fourth path between the first transmitting port and the first switching circuit.

4. The radio frequency system according to claim 3, characterized in that, The radio frequency transceiver is further configured to: When the transmission power of the fourth path is greater than or equal to a preset threshold, the second switching circuit is controlled to turn on the fourth path.

5. The radio frequency system according to claim 3, characterized in that, The radio frequency transceiver is further configured to: If the transmission power of both the third and fourth paths is greater than or equal to a preset threshold, determine whether harmonic interference exists in the fourth path. In the event of harmonic interference in the fourth path, the second switching circuit is controlled to turn on the third path.

6. The radio frequency system according to claim 3, characterized in that, The filtering unit includes multiple filters, the first end of each filter is connected to the second end of the second switching circuit, the second end of each filter is connected to the first switching circuit, and the passband of each filter is different.

7. The radio frequency system according to claim 1, characterized in that, The first transmitting circuit includes: The radio frequency (RF) traces are connected to the first transmitting port and the first switching circuit, respectively, for transmitting the RF signal.

8. The radio frequency system according to claim 1, characterized in that, When the radio frequency system operates in dual-connection mode, it controls the first and second transmitting ports in the same group to simultaneously output radio frequency signals for transmission through the first and second transmitting circuits.

9. The radio frequency system according to claim 8, characterized in that, The first and second transmitting ports in the same group output radio frequency signals in the same frequency band.

10. The radio frequency system according to claim 8, characterized in that, One of the first and second transmitting ports is used to output a first radio frequency (RF) signal, and the other of the first and second transmitting ports is used to output a second RF signal, wherein the first RF signal and the second RF signal have different frequency bands; wherein, When the reception quality of the first radio frequency signal is higher than that of the second radio frequency signal, the first transmitting port is controlled to output the first radio frequency signal for transmission through the first transmitting circuit, and the second transmitting port is controlled to output the second radio frequency signal for transmission through the second transmitting circuit, or... When the reception quality of the first radio frequency signal is lower than that of the second radio frequency signal, the system controls the first transmitting port to output the second radio frequency signal so as to transmit the second radio frequency signal through the first transmitting circuit, and controls the second transmitting port to output the first radio frequency signal so as to transmit the first radio frequency signal through the second transmitting circuit.

11. The radio frequency system according to any one of claims 1-9, characterized in that, The transmitting module is a radio frequency PAMID device, which is configured with a first input port, a second input port, a first antenna port, and a second antenna port. The first transmitting port is connected to the first transmitting circuit via the first input port; The second transmitting port is connected to the second transmitting circuit via the second input port; The first antenna port is connected to the first switching circuit and the first antenna, respectively; The second antenna port is connected to the first switching circuit and the second antenna, respectively.

12. The radio frequency system according to claim 11, characterized in that, With the transmitting module including a filtering unit and a second switching circuit, the RF PA MID device is configured with a second input port, an RF output port, and a transceiver port, wherein, A first terminal of the second switching circuit is connected to the first transmitting port through the second input port, and a second terminal of the second switching circuit is connected to the first switching circuit through the radio frequency output port and the transceiver port.

13. The radio frequency system according to claim 12, characterized in that, The first transmit port is connected to the transceiver port via radio frequency traces.

14. The radio frequency system according to claim 1, characterized in that, The radio frequency system also includes: The second transmitting module is connected to the radio frequency transceiver and the first switching circuit, respectively, and is used to support the transmission of radio frequency signals in the second frequency band.

15. An electronic device, characterized in that, Including the radio frequency system as described in any one of claims 1-14.

Images